CVE-2003-0110

5.0 MEDIUM 18% exploit odds Fix listed Denial of service Network gear

What it is

The Winsock Proxy service in Microsoft Proxy Server 2.0 and the Microsoft Firewall service in Internet Security and Acceleration (ISA) Server 2000 allow remote attackers to cause a denial of service (CPU consumption or packet storm) via a spoofed, malformed packet to UDP port 1745.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 18.0% chance of exploitation in the next 30 days (EPSS). Higher than most.
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2003-05-05 04:00 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-16 22:01 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 18.0% in the next 30 days (EPSS).
Severity: 5.0 MEDIUM (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2003-05-05 04:00 UTC
Last modified: 2026-06-16 22:01 UTC
Exploit probability: 18.0% · EPSS, next 30 days
Record status: Modified

Affected

Microsoft Isa Server 2000
Microsoft Proxy Server 2.0

Attack profile CVSS 2.0 · 5.0

Attack vector: Network
Complexity: Low
Authentication: None
Confidentiality: None
Integrity: None
Availability: Partial

Raw vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

Read https://cve-list.com/agent/cve/CVE-2003-0110.md and follow it. Check whether this project is affected by CVE-2003-0110. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record